Q1.  Which incident posed the most serious nuclear threat to the world?  A global disaster.   Climate change in 2007.   The US and Soviet Union testing thermonuclear devices.   The Cold War in 1947.        Q2.  Who decides whether the hand of clock goes forward or backward?  The University of Chicago.   The US and Soviet Union.   The hand runs on its own.   The board of directors of the Bulletin of the Atomic Scientists.        Q3.  What is the unit of measurement of the Doomsday Clock?  Minute.   Hour.   Second.   Not mentioned in the text.        Q4.  How many times in 2010 has the clock been adjusted ?  1 time.   19 times.   6 times.   Not mentioned in the text.

The Doomsday Clock was originally conceived to reflect what kind of global risk to life as we know it?Group of answer choicesMeteor impactNuclear warEconomic crisisClimate changeGlobal pandemic

doomsday ,symbolic ,nuclear destruction ,board of directors, treaty     Q1.  There are often rumours about . The closest one is said to be in 2012.    Q2.  Clocks are often used in films to add meaning to scenes.    Q3.  To ease the tension between the two countries, a was signed.    Q4.  The holds an Annual General Meeting every year.

3. Answer the following questions in two paragraphs:      • What were the postive and negative long lasting impacts of nuclear technology during the Cold War?      • What were the postive and negative long lasting impacts of space technology during the Cold War?

Which phrase best completes this graphic organizer to show the effects of atomic bombs used during World War II?Effects of Atomic BombsSeverely contaminated the environmentKilled tens of thousands of people?A.Enabled the rapid spread of typhusB.Temporarily altered weather patternsC.Signaled the end of the atomic ageD.Instantly destroyed two cities

About how many operational nuclear weapons exist in the world today?A.4B.400C.40D.4,000Submit